To ensure the system can cryptographically verify base software
packages come from Oracle (and to connect to the Unbreakable Linux Network to
receive them), the Oracle GPG key must properly be installed.
To install the Oracle GPG key, run:
$ sudo uln_register
If the system is not connected to the Internet,
then install the Oracle GPG key from trusted media such as
the Oracle installation CD-ROM or DVD. Assuming the disc is mounted
in /media/cdrom, use the following command as the root user to import
it into the keyring:
$ sudo rpm --import /media/cdrom/RPM-GPG-KEY-oracle
Alternatively, the key may be pre-loaded during the Oracle installation. In
such cases, the key can be installed by running the following command:
sudo rpm --import /etc/pki/rpm-gpg/RPM-GPG-KEY-oracle